summaryrefslogtreecommitdiff
path: root/command/ma-command.c
diff options
context:
space:
mode:
Diffstat (limited to 'command/ma-command.c')
-rw-r--r--command/ma-command.c417
1 files changed, 0 insertions, 417 deletions
diff --git a/command/ma-command.c b/command/ma-command.c
deleted file mode 100644
index da0e8795..00000000
--- a/command/ma-command.c
+++ /dev/null
@@ -1,417 +0,0 @@
-/*
- * Copyright (C) 2018 Alberts Muktupāvels
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <config.h>
-#include "ma-command.h"
-
-#define BUFFER_SIZE 64
-
-struct _MaCommand
-{
- GObject parent;
-
- gchar *command;
- gchar **argv;
-};
-
-typedef struct
-{
- GPid pid;
-
- GIOChannel *channel;
-
- GString *input;
-
- guint io_watch_id;
- guint child_watch_id;
-} CommandData;
-
-enum
-{
- PROP_0,
-
- PROP_COMMAND,
-
- LAST_PROP
-};
-
-static GParamSpec *command_properties[LAST_PROP] = { NULL };
-
-static void initable_iface_init (GInitableIface *iface);
-
-G_DEFINE_TYPE_WITH_CODE (MaCommand, ma_command, G_TYPE_OBJECT,
- G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
- initable_iface_init))
-
-static gboolean
-read_cb (GIOChannel *source,
- GIOCondition condition,
- gpointer user_data)
-{
- GTask *task;
- CommandData *data;
- gchar buffer[BUFFER_SIZE];
- gsize bytes_read;
- GError *error;
- GIOStatus status;
-
- task = (GTask *) user_data;
- data = g_task_get_task_data (task);
-
- if (g_task_return_error_if_cancelled (task))
- {
- g_object_unref (task);
-
- data->io_watch_id = 0;
-
- return G_SOURCE_REMOVE;
- }
-
- error = NULL;
- status = g_io_channel_read_chars (source, buffer, BUFFER_SIZE,
- &bytes_read, &error);
-
- if (status == G_IO_STATUS_AGAIN)
- {
- g_clear_error (&error);
-
- return G_SOURCE_CONTINUE;
- }
- else if (status != G_IO_STATUS_NORMAL)
- {
- if (error != NULL)
- {
- g_task_return_error (task, error);
- g_object_unref (task);
- }
-
- data->io_watch_id = 0;
-
- return G_SOURCE_REMOVE;
- }
-
- g_string_append_len (data->input, buffer, bytes_read);
-
- return G_SOURCE_CONTINUE;
-}
-
-static void
-child_watch_cb (GPid pid,
- gint status,
- gpointer user_data)
-{
- GTask *task;
- CommandData *data;
-
- task = (GTask *) user_data;
- data = g_task_get_task_data (task);
-
- g_task_return_pointer (task, g_strdup (data->input->str), g_free);
- g_object_unref (task);
-}
-
-static void
-cancelled_cb (GCancellable *cancellable,
- gpointer user_data)
-{
- GTask *task;
-
- task = G_TASK (user_data);
-
- g_object_unref (task);
-}
-
-static void
-command_data_free (gpointer user_data)
-{
- CommandData *data;
-
- data = (CommandData *) user_data;
-
- if (data->pid != 0)
- {
- g_spawn_close_pid (data->pid);
- data->pid = 0;
- }
-
- if (data->channel != NULL)
- {
- g_io_channel_unref (data->channel);
- data->channel = NULL;
- }
-
- if (data->input != NULL)
- {
- g_string_free (data->input, TRUE);
- data->input = NULL;
- }
-
- if (data->io_watch_id != 0)
- {
- g_source_remove (data->io_watch_id);
- data->io_watch_id = 0;
- }
-
- if (data->child_watch_id != 0)
- {
- g_source_remove (data->child_watch_id);
- data->child_watch_id = 0;
- }
-
- g_free (data);
-}
-
-static gboolean
-ma_command_initable_init (GInitable *initable,
- GCancellable *cancellable,
- GError **error)
-{
- MaCommand *command;
-
- command = MA_COMMAND (initable);
-
- if (command->command == NULL || *command->command == '\0')
- {
- g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA,
- "Empty command");
-
- return FALSE;
- }
-
- return TRUE;
-}
-
-static void
-initable_iface_init (GInitableIface *iface)
-{
- iface->init = ma_command_initable_init;
-}
-
-static void
-ma_command_finalize (GObject *object)
-{
- MaCommand *command;
-
- command = MA_COMMAND (object);
-
- g_clear_pointer (&command->command, g_free);
- g_clear_pointer (&command->argv, g_strfreev);
-
- G_OBJECT_CLASS (ma_command_parent_class)->finalize (object);
-}
-
-static void
-ma_command_set_property (GObject *object,
- guint property_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- MaCommand *command;
-
- command = MA_COMMAND (object);
-
- switch (property_id)
- {
- case PROP_COMMAND:
- //g_assert (command->command == NULL);
- command->command = g_value_dup_string (value);
- if (command->argv && *command->argv != NULL) {
- g_strfreev(command->argv);
- }
- g_shell_parse_argv (command->command, NULL, &command->argv, NULL);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
- break;
- }
-}
-
-static void
-ma_command_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
-{
- MaCommand *command;
-
- command = MA_COMMAND (object);
-
- switch (prop_id)
- {
- case PROP_COMMAND:
- g_value_set_string (value, command->command);
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-install_properties (GObjectClass *object_class)
-{
- command_properties[PROP_COMMAND] =
- g_param_spec_string ("command", "command", "command",
- NULL,
- G_PARAM_READWRITE);
-
- g_object_class_install_properties (object_class, LAST_PROP,
- command_properties);
-}
-
-static void
-ma_command_class_init (MaCommandClass *command_class)
-{
- GObjectClass *object_class;
-
- object_class = G_OBJECT_CLASS (command_class);
-
- object_class->finalize = ma_command_finalize;
- object_class->set_property = ma_command_set_property;
- object_class->get_property = ma_command_get_property;
-
- install_properties (object_class);
-}
-
-static void
-ma_command_init (MaCommand *command)
-{
-}
-
-/**
- * ma_command_new:
- * @command: a command
- * @error: (nullable): return location for an error, or %NULL
- *
- * Creates a new #MaCommand.
- *
- * Returns: (nullable): a newly allocated #MaCommand
- */
-MaCommand *
-ma_command_new (const gchar *command,
- GError **error)
-{
- return g_initable_new (MA_TYPE_COMMAND, NULL, error,
- "command", command,
- NULL);
-}
-
-/**
- * ma_command_run_async:
- * @command: a #MaCommand
- * @cancellable: (nullable): a #GCancellable or %NULL
- * @callback: a #GAsyncReadyCallback to call when the request is satisfied
- * @user_data: the data to pass to @callback
- *
- * Request an asynchronous read of output from command that was passed
- * to ma_command_new().
- */
-void
-ma_command_run_async (MaCommand *command,
- GCancellable *cancellable,
- GAsyncReadyCallback callback,
- gpointer user_data)
-{
- GTask *task;
- CommandData *data;
- GSpawnFlags spawn_flags;
- gint command_stdout;
- GError *error;
- GIOChannel *channel;
- GIOStatus status;
- GIOCondition condition;
-
- g_return_if_fail (MA_IS_COMMAND (command));
- g_return_if_fail (callback != NULL);
-
- task = g_task_new (command, cancellable, callback, user_data);
- g_task_set_source_tag (task, ma_command_run_async);
-
- if (cancellable)
- {
- g_signal_connect_object (cancellable, "cancelled",
- G_CALLBACK (cancelled_cb), task,
- G_CONNECT_AFTER);
- }
-
- data = g_new0 (CommandData, 1);
- g_task_set_task_data (task, data, command_data_free);
-
- spawn_flags = G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD;
- error = NULL;
-
- if (!g_spawn_async_with_pipes (NULL, command->argv, NULL, spawn_flags,
- NULL, NULL, &data->pid, NULL, &command_stdout,
- NULL, &error))
- {
- g_task_return_error (task, error);
- g_object_unref (task);
-
- return;
- }
-
- channel = data->channel = g_io_channel_unix_new (command_stdout);
- g_io_channel_set_close_on_unref (channel, TRUE);
-
- g_assert (error == NULL);
- status = g_io_channel_set_encoding (channel, NULL, &error);
-
- if (status != G_IO_STATUS_NORMAL)
- {
- g_task_return_error (task, error);
- g_object_unref (task);
-
- return;
- }
-
- g_assert (error == NULL);
- status = g_io_channel_set_flags (channel, G_IO_FLAG_NONBLOCK, &error);
-
- if (status != G_IO_STATUS_NORMAL)
- {
- g_task_return_error (task, error);
- g_object_unref (task);
-
- return;
- }
-
- data->input = g_string_new (NULL);
-
- condition = G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP;
- data->io_watch_id = g_io_add_watch (channel, condition, read_cb, task);
-
- data->child_watch_id = g_child_watch_add (data->pid, child_watch_cb, task);
-}
-
-/**
- * ma_command_run_finish:
- * @command: a #MaCommand
- * @result: a #GAsyncResult
- * @error: (nullable): return location for an error, or %NULL
- *
- * Finishes an operation started with ma_command_run_async().
- *
- * Returns: %NULL if @error is set, otherwise output from command
- */
-gchar *
-ma_command_run_finish (MaCommand *command,
- GAsyncResult *result,
- GError **error)
-{
- g_return_val_if_fail (MA_IS_COMMAND (command), NULL);
- g_return_val_if_fail (g_task_is_valid (result, command), NULL);
- g_return_val_if_fail (error == NULL || *error == NULL, NULL);
-
- return g_task_propagate_pointer (G_TASK (result), error);
-}